Which real-world scenario best exemplifies the use of a queue data structure?
Finding the shortest route between two points
Managing a list of students sorted alphabetically
Tracking the order of tasks assigned to a CPU
Storing a family tree with ancestors and descendants
What is a potential drawback of implementing a queue using an array with a fixed size?
Risk of queue overflow if the queue reaches its maximum capacity.
Increased time complexity for enqueue and dequeue operations.
Inability to store elements of different data types.
Requirement of complex algorithms for insertion and deletion.
If a queue is implemented using a fixed-size array, what condition leads to a 'queue overflow' situation?
Trying to sort the elements in the queue.
Trying to add an element to a full queue.
Trying to access an element beyond the queue's capacity.
Trying to remove an element from an empty queue.
In a circular queue implemented using an array of size 5, the front is at index 3, and the rear is at index 1. What happens after two dequeue operations?
The front moves to index 1, and the rear moves to index 4.
The front moves to index 0, and the rear remains at index 1.
The queue becomes empty.
The front moves to index 0, and the rear moves to index 4.
What is the primary characteristic that distinguishes a queue from other linear data structures?
Elements are added at one end and removed from the other.
It allows for random access of elements.
It is a sorted data structure.
Elements are added and removed from the same end.
What is the maximum number of elements a circular queue of size 'n' can hold?
n
n + 1
n - 1
It depends on the implementation
What is the primary disadvantage of using an array to implement a queue?
Complex implementation
High memory usage
Fixed size limitation
Inefficient search operations
What data structure is used to implement a priority queue?
Linked List
Array
Stack
Heap
Which of the following real-world scenarios can be effectively modeled using a queue?
Managing a priority-based task list.
Handling customer service requests in a first-come, first-served manner.
Implementing an undo/redo functionality in a text editor.
Storing the browsing history in a web browser.
How does an array-based queue handle the underflow condition?
By using a circular array to reuse the empty spaces.
By raising an exception or returning an error value when attempting to dequeue from an empty queue.
By dynamically resizing the array.
By overwriting the existing elements.